Shock-absorber.



G. L. ROBERTSON.

SHOCK ABSORBER. APPLICATION FILED MAY 16,

wi/tmeooeo neeeeee.

To all whom it may com-em:

Be it known that it, GEORGE L. Ronnnrseu, a. citizen of the United States, residing at Philadelphia, in. the county of Philadelphia and State of Pennsylvania, have inventecl certain new and useful Improvements in Shock-Absorbers, of which the following is e specification.

My invention relates t?) improvements in shock absorbers, the object of the invention being to provide a device of this character which may be secured. to the axle of any vehicle, and which is adapted to absorb the shock anti prevent sudrien rehouncl of the body of the vehicle due to the action of the springs.

A further object is to provide improvements of this chziracter which may he at justecl in accordance with the weight of the hotly and the strength of the springs, and which may he moved into or out of open ntive position, and held. in either position.

With these and other objects in. View, the invention consists in certain novei :teetures of construction end combinations and errengementsfot parts, as 'Wiii be more tuily hereinafter described tutti pointed: out in the cleinis.

' inthe eccoin ienying drawings Figure I, is a view in side elevation. illustrating" my improvements. Fig. 2, is at View section on the iinc 2-2 of Fig. 1. Fig. 3, is en entel-god. View in section on the line 8-3 of 1, and Fig. t, is view in section on the line e lt oi? Fig. i,

1, ieptesents a casting which constitutes a fixed hrelte shoe having perforated. ears 2 atlupteti to stmdrtlc nuaxle 3, end i is u clemping'hoit which is projected through perforated ears 2, and scented, by means of a. nut 5 to elem. the casting onto the axle,

A segment 6 is provided with bifurcated me; 7 emit; respectively, which straddle the castingend are securmi thereto by means of screws 9 or otherwise, and the ('{ilVGti portion H) oi Haiti segment constitutes a tooth rack, which is provided with a. suitable scale for a. purpose which will he cxpininedl.

11, represents a, hrzihe shoe which is ethipted to hear against a. vertical her 12 secured to the hody of the vehicle (not shown). This hi'nkc shoe 11 is made with integzmi guitlofingers lfi, projectingover the eth cs of he! 12, and on the heck "have ot Heidi shoe,

Etygeelfleetten if Letters Patent.

Etp p'flceticn. filed may 16, 1.91. eerie! l te.

tented @et. 11?, Twit e. lug M is prcvitei having an inciined slot 15 to receive pivot hoit 16.

This pivot colt passed through the bifurcated circular enei of e link 17, and this link I? comprises two ends 18, end 19 precisely alike, each of them constituting screvwthreacled rotis With circular hifiin csted ends, and said screw-threaded rods engaging in an adjusting sleeve, whicliwhen turne i either lengthens 01' shortens the link as is Well understood. The outer endof the link is pivotellv connected to a sliding hrncicet 20, which partially incloses the curved segment 10, and one member of this bracket constitutes a pointer 22, to register with n scaie on the segment. The outer etui of the bracket 20 supports fixed iever 21, and n. pivot d spring-pressed lever 23, having a tooth thereon tc'engege be tween the teethin the tech. on segment 10,

as to hold the tint: 1? at the desired etijnstment. lit wiii he noted that the curved portion 10 is curved in the etc of n. cii'eie eccentric to bolt 16, so that the movement cf the link has a tendency to more breh'e shoe it toward or away from her 12, this adjustment being necessary as the shoe weal-s.

ii; cross her is fixed in the hihfurceteci encl 8 of hireeitet end through-this her 25, it thunih screw 26 urcjecte, end enge es the rounded pet tion. oitthe -nnei' end of imit 1'? so as to prevent a too radical downward, en reni'wmrd mcvement oi? the shoe ll, hut compet the lett r remain in operative posh tion.

:83? reason of the inclined eict i5, any dhiwn'wznrti movement of shoe it tends to iPZLW the shoe ewey item her 1?, anti any upwertl movement tends to more the shoe toward the hair 19.

it coileti spring 2? is located between the hifturcateci end oft hrecitet'fi, ainri. It tug on shoe Lil tentls to hoicl the shoe in normei. position. To lock the shoe in an ebno'rmei or useless position, openings 28 end 29 re snectiveiy ere provicleii in end 8', end shoe it, for the reception or" e. Jin, nail offcthet' suitehie rievice (not shown to hoizil thzishde away from her 12* The normal opet-etion is as toilorhsi Assuming the shoe tobe properly adjusted by means of the link 17 to take up weeron the shoe, when the wheel's of the vehicie strike :1 sudden irregularity in the road, the vehicle hotly moves downwnrtiiy, and this move tit ' the general form cool arrangement 0 vertical movable liar soul slices and. for cola pcrmil body to rise slowly Willi-out "lac sudden recoil action lflll; spring being oppl cclcblo,

moving cllc link 17, anal locking if; at

visor of the slice may loo 'lzllzcn up, coil lo hold lice slioo 20 its il'ic scrcvr 28 "list-f suit a the weight of sprin s,

loo. lvsvcling over smooth sizccts, and 'sllOClK absorber is not o csircil, slice 11. may osmovcil clownwsr ll will the openings 28 E39 register, when pin, or nail may be loss? cl age co as to holo the 531cc lien,

my vehicle in accordance will: P135 body, and the pcwcz' of its on us; Various slight changes migniv lac mace parts ilcscrioecl William departing from my invention, 21ml hence 1 dc not limit mysclf t precise dclcils set forth, cfli'lslilcl' myself liberty to malls such changes and alters lZlGZlS fairly ficll w'ifliio spirit and scope of aypcodcal claims,

Having clans my invcoticn, what I claim new an: 'o irc lc sconce by Let- Pctcxi'c 's: l. axlcvicc or? the clmmczcr lcscriccd, lac combinoiicn Willi a fixed bfilli'? shoe, o

. scour *czmcclccl lo the ssgmcfoi, o movable choc connected to the link, a, m 501" attachment to a vchiclc bfifly', and positional ocvvcco said slices, c'ovl 5 spring normally holding llic movable slioc against the car, substantially as (lcscribccl.

In 2% clcvicc of the character described,

comloi'ootion will]. a fixed brake c segment secured to the fixccl brake shoe, o

- connected lollic link, a loci attachto r. VCl'llClG body, and positioned os- 11 slices, 2: spring normolly holding oovolile shoe against the bar, om. means (ljusling the length of soicl link, Whcrc- 1c movable shoe may be adjusted towaz away from the fixed shoe, substantially as described,

in a ucvice of tloc cncrcclcv described, lilac combination with :lfiiccl ci'clic s c a movable brake slice op tlc Toccly, of mccns pivozc v mcvclilc SllOB, 'avl'aczccy the doc; mcnt of said causes mcv rocvo :SfWitf, the bar, arfl "the so clam; the device may vcgu tlic fixed larslcc slice, c

connected to the segment, a movable mcvcmeiii cf scidl hm compels the movable shes "to clamp fins against the fixed slioc, soicl ,civoiol s'cppoz'ting means constituting a link pivctolly connected to said shoe, a segmental guiclc bar curved ccccntrically &0 the pivotal connection between the link and ilic Sllfi, a bracket movable on said scgmenial guide aml pivotolly connected to scicl link, substantially as described.

l. lo a cvicc oi the character described, the combination with c fmccl brake shoe, a saga-cm, sccurcil tc b oc fixed broke shoe, is Hill; cconcclc-rl to ilac segment, smovsblc ,slicc conocc'tccl to the link, a lam forcttoclimcilt to c, vcliiclc iwdy, cml positioned between SllUES, means for odjust-ingtlic length of sclcl link, whereby the movable choc may lJc oklj'oslcd toward and away from the fixed slioc, and springs exerting pressure on. saicl movable shoe tending to move the shoe in direction to pivot the link and hold fills choc in contact with the our, substantially as doscribecl,

o. In a levies cl? tho character sicscrioeal, combination with c fixed broke shoe, anal o movable brake SllOB opposing the same, of a vertical movable bar positioned between said slices and for attachment to a vehicle body, of means pivotolly supporfiin sci. movable slice, whereby ihe downwan. movement of said bar causes the movable shoe to move away from the cor, aml the upward movement of said, bill. compels the movable slice "no clamp the bar against the fixccl shoe, said pivots]. supporting moans ccnsiilutiiog link pivotslly c'onnectccl to sicl choc, o segmental guiclc loaf curved ecccnlricclly to the'pivotol connection between the linkaml the shoe, a bracket movable on said segmental guide and pivot-ally connectecl "(0 sold link, sold segment having a toothed edge, a spring-pressed finger lever on said bracket oclcptccl to engage between the teeth of the segment and hold. the link at various angular adjustments, cold link comprising two sections 0 positcly screwthrcaded, an adjusting s cove internally scrcw-lhyccflctl to. receive the ends, :1 scale on said 'giient, and a pointer on the bracket izcgofqcoring with the scalc, substzio. lially cs described.

A device of the character described, comprising a, fiXQil slice adapted to be secured to the axle of a vehicle, oml a movchic orslrc shocogposing the same, a bracket having bifurcsteo ends secured to soicl fixed shoe providing a, curved scgmcnt, o lug on movable slice having an inclined SlO'i? herein inclining away from line fiscal slicelrcm to bcttom of sci slot, :1 link, a Ev'l progccimg through said slot and. p1vlhc lin the lug, moans v '"land of sciil llnl: l, vvl", s 15, mavc act;

osmclimcos ill j incense ing bifurcated ends secured to said fixed shoe providing a curved segment, u lug on said movable shoe having an inclined slot therein. inclining away from the fixed shoe from top to bottom of said slot, it link, a bolt projecb ing through said slot and pi'votztlly connecting the link to the lug, means connected to the outer end of said link and movable on. the segment, whereby said movable shoe is adjusted, at bar for attachment to a vehicle and} adopted to move vertically between said shoes and through the bifurcated 'ends of said bracket, 2r lug v0n said movable shoe above the lower member of said bracket, a coiled. spring positioned between said lug and bracket, said lower member of the bracket having an opening therein, said movable shoe having on opening therein adapted to register with the opening in the bracket w ion the shoe is in an inoperative position, and said openings adopted to receive a holding device, substantially scribed.

8. A device of the character described, comprising a fixed shoe adapted to be secured to the axle oi a vehicle, and a movable oreke shoe opposing the sumo, e bracket having bifurcated ends secured to said fixed shoe providing a curved segment, a lug on said movable shoe having an inclined slot therein inclining away from the fixed shoe from top to bottom of said slot, a link, it bolt projecting through said slot and pivotztlly connecting the link to the lug, means connected to the outer end of said link and movable on the segment, whereby said movable shoe is adjusted, a bar for ai'tnclnnent ed to receive a. holding dev' to s vehicle snd edapted to move vertically bet-ween said shoes and through the bifurceded ence of said bracket, a log on said movable shoe above the lower member oi said bracket, a; coiled spring positioned between seid lug and bracket, a cross bar fixed in the lower bifurcated end of said bracket, and a set thumb screw positioned in said her and bearing against the lower end of said link, substantially as described.

9. A device of the character described, comprising a. fixed shoe adapted to be socured to the axle of a vehicle, and a mov able brake shoe opposing the some, a bracket having bifurcated ends secured to said fixed shoe providing it curved segment, :1 lug on seidmovsble shoe having an inclined slot therein inclining away from the fixed shoe from top to bottom of said slot, a link, a

bolt projecting through said slot and pivotally connecting the link to the lug, means connected to the outer end of said link and movable on the segment, whereby said movable shoe is adjusted, bar for cttechmcnt to e vehicle and adapted to move vertically between said shoes and. through the bifurceted ends of said bracket, e lug on said movable shoe above the lower member of said bracket, a coiled spring positioned between said lug, and bracket, said lower member of the bracket having an opening therein, said movable shoe having an opening therein adapted to register with the opening in ll 5, bracket when the shoe is in an inoperative position, and said openings adepta cross bar fixed in the lower bifurcated end of said bracket, and at set thumb screw positioned in said bar and bearing against the lower end of said link, substantially as described.

In testimony whereof l have signed my name to this specification in the presence 9f two subscribing witnesses.

fillllltll ll LAWSO N tlllllllt'lSON.

Witnesses R. H. KRENKEL, CHAS. E. POTTS. 

